Home / 487,828.09-673,122.31-306,410.77

Finding the Fourth Proportional to 487,828.09, 673,122.31 and 306,410.77

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Solution

The fourth proportional to 487,828.09, 673,122.31 and 306,410.77 is: 422,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,828.09 : 673,122.31 = 306,410.77 : x
  2. Step 2: Convert to fraction form
    487,828.09/673,122.31 = 306,410.77/x
  3. Step 3: Cross multiply
    487,828.09x = 673,122.31 × 306,410.77
  4. Step 4: Simplify right side
    487,828.09x = 206,251,925,311.28
  5. Step 5: Solve for x
    x = 206,251,925,311.28/487,828.09
  6. Step 6: Final answer
    x = 422,796.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.